CN106572212B

CN106572212B - Shell, shell manufacturing method and mobile terminal

Info

Publication number: CN106572212B
Application number: CN201610973729.6A
Authority: CN
Inventors: 李静; 吉斌; 袁于才
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2016-09-08
Filing date: 2016-09-08
Publication date: 2020-04-14
Anticipated expiration: 2036-09-08
Also published as: CN106572211B; CN106572211A; CN106572208A; CN106572208B; CN106572212A; CN107809499A

Abstract

The invention discloses a shell, a shell manufacturing method and a mobile terminal. The coating is attached to the side, facing the user, of the non-metal part, and the color of the coating is consistent with the color of the surface, facing the user, of the metal part, so that the overall appearance performance of the shell is consistent, and the user experience is improved.

Description

Shell, shell manufacturing method and mobile terminal

The application is a divisional application of patent applications with application number 201610812276.9, application date 2016, 9 and 8, and application name shell, shell manufacturing method and mobile terminal.

Technical Field

The invention relates to the field of communication, in particular to a shell, a shell manufacturing method and a mobile terminal.

Background

With the wide application of the metal shell of the mobile phone, the requirement on the appearance of the mobile phone shell is higher and higher, and more people intend to integrate the appearance of the mobile phone shell. However, most mobile phones are limited by communication functions or processing technologies, so that the mobile phone shells have metal parts and non-metal parts. Because non-metallic part adopts and metal portion inequality material constitution, lead to the apparent colour of non-metallic part and the apparent colour of metal portion inconsistent to make cell phone case's outward appearance wholeness ability not high, and then make user experience not high.

Disclosure of Invention

The invention provides an antenna device and a mobile terminal capable of improving user experience.

The invention provides an antenna device, wherein a shell comprises two metal parts and a non-metal part fixedly connected between the two metal parts, a coating is attached to one side, facing a user, of the non-metal part, and the color of the coating is consistent with the color of the surface, facing the user, of the metal part.

The invention also provides a shell manufacturing method, wherein the shell manufacturing method comprises the following steps:

providing a housing piece having a metallic portion and a non-metallic portion;

and a coating is attached to the area of the appearance surface of the shell part, which is positioned on the non-metal part, and the color of the coating is consistent with the color of the appearance surface of the metal part.

The invention further provides a mobile terminal, wherein the mobile terminal comprises the shell, and the mobile terminal further comprises a main board fixed in the shell and functional components arranged on the main board.

According to the shell, the shell manufacturing method and the mobile terminal, the coating is attached to the side, facing the user, of the non-metal part, and the color of the coating is consistent with the color of the surface, facing the user, of the metal part, so that the overall appearance performance of the shell is consistent, and the user experience is improved.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a housing provided by the present invention;

FIG. 2 is an enlarged schematic view of portion II of the housing of FIG. 1;

FIG. 3 is a schematic view of the housing of FIG. 1;

FIG. 4 is a schematic illustration of the housing of FIG. 1 being machined;

FIG. 5 is a schematic illustration of the housing of FIG. 1 being machined;

FIG. 6 is a schematic illustration of the processing of the housing of FIG. 1;

FIG. 7 is a schematic illustration of the housing of FIG. 1 being machined;

FIG. 8 is a schematic view of the housing of FIG. 1;

FIG. 9 is a schematic view of the housing of FIG. 1;

FIG. 10 is a top view of the housing of FIG. 9;

FIG. 11 is a schematic view of the housing of FIG. 1;

FIG. 12 is a schematic flow chart of a method for manufacturing a housing according to the present invention;

FIG. 13 is a schematic illustration of the processing of the housing of FIG. 1;

fig. 14 is a schematic diagram of a mobile terminal provided by the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1 and 2, a housing 100 according to the present invention is provided. The casing 100 comprises two metal parts 10 and a non-metal part 20 fixedly connected with the two metal parts 10, wherein a coating 30 is attached to the side of the non-metal part 10 facing a user, and the color of the coating 30 is consistent with the color of the surface of the metal part 10 facing the user. It is understood that the housing 100 may serve as a housing of the mobile terminal 200, and the mobile terminal 200 may be a mobile phone, a tablet computer, a notebook computer, etc.

The coating 30 is attached to the side, facing the user, of the non-metal part 20, and the color of the coating 30 is consistent with the color of the surface, facing the user, of the metal part 10, so that the overall appearance performance of the shell 100 is consistent, and the user experience is improved.

In the present embodiment, the housing 100 has a plate shape. The non-metal part 20 is fixed between the two metal parts 10. The non-metal part 20 may be distributed in a predetermined shape on the housing 100. The metal part 10 may be formed by cutting a complete metal plate member. The non-metal part 20 may be fixed to the metal part 10 by injection or bonding. In order to increase the overall metal texture of the housing 100, the area occupied by the non-metal part 20 is smaller than the area occupied by the metal part 10. Of course, in other embodiments, the area occupied by the non-metal part 20 and the area occupied by the metal part 10 may be the same, or may be larger than the area occupied by the metal part 10.

In this embodiment, the coating 30 is a mixture. The coating 30 is uniformly applied to the surface of the non-metallic portion 20 facing the user. The coating 30 coincides with the surface area of the non-metallic part 20 facing the user in the orthographic projection area of the non-metallic part 20. So that the coating 30 completely conceals the non-metallic part 20, i.e. the non-metallic part 20 is hidden under the coating 30. The non-metal part 20 is completely covered by the coating 30, so that a user can observe the appearance of the shell 100, only the metal part 10 and the coating 30 can be observed, and the color of the coating 30 is consistent with the color of the surface of the metal part 10 facing the user, so that the overall appearance performance of the shell 100 is consistent, and the user experience is improved. It is understood that the color of the coating layer 30 is consistent with the color of the surface of the metal part 10 facing the user, which means that the color appearance of the coating layer 30 directly viewed by the user is consistent with the color appearance of the surface of the metal part 10 facing the user, i.e. the perceived color of the coating layer 20 is consistent with the perceived color of the surface of the metal part 10 facing the user. Of course, in other embodiments, the area covered by the coating 30 may also be larger than the outer surface area of the non-metallic portion 20.

Further, the coating layer 30 is composed of ink 33 in which metal particles 31 and a coloring material 32 are mixed. In the present embodiment, the metal particles 31 are mixed into the ink 33 so that the coating layer 30 has the same metal appearance as the metal portion 10, and the coloring material 32 is mixed into the ink 33 so that the color of the entire coating layer 30 is improved so that the appearance color of the coating layer 30 is matched with the appearance color of the metal portion 10. The coating 30 is mainly formed by the ink 33, so that the coating 30 is conveniently formed on the non-metal part 20, that is, the coverage area of the coating 30 can be precisely controlled, and the appearance performance of the housing 100 can be improved. It is understood that the coating 30 may be formed on the non-metal portion 20 by a spraying process, a screen printing process, or an exposure and development process. The metal particles 31 and the colorant 32 may be mixed into the ink 33 according to a predetermined ratio, the metal particles 31 may be any one metal or a combination of metals of aluminum, silver, iron, titanium, or magnesium, for example, the metal particles 31 may be aluminum powder, silver powder, titanium powder, aluminum alloy powder, titanium alloy powder, aluminum magnesium alloy powder, or titanium magnesium alloy powder. In other embodiments, the metal particles 31 may be stainless steel particles.

Further, referring to fig. 3, an ink protection layer 40 is attached to the side of the coating layer 30 facing the user.

In the present embodiment, the material of the ink protection layer 40 is ink. The ink protection layer 40 has light transmittance. The apparent color light of the coating 30 can penetrate through the ink protection layer 40 for the user to observe, that is, the ink protection layer 40 is prevented from influencing the appearance of the coating 30, that is, the overall appearance performance of the shell 100 is ensured. The ink protection layer 40 has a high surface tension stress, so that the ink protection layer 40 has wear resistance, corrosion resistance, falling resistance and the like. The casing 100 has a coating 30 and an ink protection layer 40 on the non-metal part 20. The orthographic projection area of the ink protection layer 40 on the coating 30 coincides with the coating 30, so that the ink protection layer 40 can be accurately attached to the coating 30, the appearance performance of the shell 100 is ensured, the coating 30 is prevented from being scratched, dropped or corroded, and the production cost is reduced. In another embodiment, the non-metal part 20 is laminated with a plurality of layers of the coating 30 or/and a plurality of layers of the ink protection layer 40, so that the color of the housing 100 in the non-metal part 20 is more pure, and the appearance protection performance is more excellent.

Further, the ink protection layer 40 is a sandblast resistant ink.

In the present embodiment, in order to ensure the flatness of the entire appearance of the case 100 and to obtain a certain degree of cleanliness and different degrees of roughness on the surface of the case 100, the mechanical properties of the appearance surface of the case 100 are improved by performing blasting on the appearance surface of the metal part 10, and the fatigue resistance of the appearance surface of the case 100 is improved. However, if the ink protection layer 40 is already attached to the coating layer 30 before the metal part 10 is sandblasted, the ink protection layer 40 needs to use a sandblast-resistant ink, so that the surface of the ink protection layer 40 is damaged when the metal part 10 is sandblasted, thereby affecting the appearance and structure of the housing 100. Of course, in other embodiments, the coating 30 may also be a sandblast resistant ink to further enhance the aesthetic structural properties of the housing 100.

Further, the ink 33 and the ink protection layer 40 are both exposure inks. In the present embodiment, the coating layer 30 and the ink protection layer 40 are formed on the non-metal portion 20 by an exposure and development method. Specifically, referring to fig. 4, firstly, a layer of coloring ink 30a is applied on the outer surfaces of the metal part 10 and the non-metal part 20, and the coloring ink 30a is baked at 70 ℃ for 20 minutes; then, referring to fig. 5, the protective ink 40a is laid on the baked colored ink 30 a; then, referring to fig. 6, a film 40b is attached to the protective ink 40a, the film 40b has a predetermined light and shadow area 40c, the predetermined light and shadow area 40c coincides with the non-metal portion 20, and the film 40b is irradiated by a light source 40d, so that the protective ink 40a and the coloring ink 30a are photopolymerized at a portion corresponding to the light and shadow area 40c, and the protective ink 40a and the coloring ink 30a are not photopolymerized at a portion corresponding to the metal portion 10; then, referring to fig. 7, portions of the protective ink 40a and the coloring ink 30a where the photopolymerization reaction does not occur are corroded by alkali solution, so that the protective ink 40a and the coloring ink 30a remain only on the non-metal portion 20. Finally, the protection ink 40a and the coloring ink 30a remaining in the non-metal part 20 are baked and cured at 180 degrees celsius, so that the protection ink 40a and the coloring ink 30a remaining in the non-metal part 20 form the overcoat layer 30 and the ink protection layer 40, respectively.

Further, the ink protection layer 40 has a matte surface facing the user. In the present embodiment, the metal part 10 is subjected to the sand blast treatment on the side facing the user, so that many concave and convex pits can be formed on the appearance surface of the metal part 10, that is, the appearance surface of the metal part 10 can be diffusely reflected. In order to keep the appearance performance of the housing 100 at the non-metal part 20 consistent with the appearance performance of the metal part 10, the surface of the ink protection layer 40 facing the user may be matte, so that the surface of the ink protection layer 40 facing the user may also be uneven pits, that is, the surface of the ink protection layer 40 facing the user may also be diffuse reflection.

Further, the non-metal part 20 is used to form an antenna clearance area of the housing 100.

In the present embodiment, the area occupied by the metal part 10 is larger than the area occupied by the non-metal part 20. When the housing 100 is applied to the mobile terminal 200, the antenna inside the mobile terminal 200 needs to radiate an electromagnetic signal through the housing 100. The metal part 10 inevitably shields the electromagnetic signal of the antenna due to the metal property, so that the non-metal part 20, the coating 30 and the ink protection layer 40 disposed on the non-metal part 20 are required to be used as a clearance area of the antenna, thereby increasing the radiation performance of the antenna. Specifically, the non-metal part 20 is made of a non-signal shielding material. In a preferred embodiment, the non-metal part 20 is made of plastic. Of course, in other embodiments, the material of the non-metal part 20 may be carbon fiber, organic resin, glass fiber, or the like.

Further, referring to fig. 8, an anodized layer 11 is disposed on a side of the metal portion 10 facing the user, and a color of the anodized layer 11 is identical to a color of the coating 30.

In this embodiment, in order to make the metal part 10 have a color required by a user, the metal part 10 is anodized toward the user, so that the metal part 10 is colored toward the user, and the metal part 10 has a predetermined color toward the user. Of course, in other embodiments, the metal part 10 may be electroplated or etched to achieve a predetermined color toward the user side.

Further, the anodized layer 11 has a blasted surface 12 facing the user. In the present embodiment, after the anodized layer 11 is formed by machining the metal part 10 toward the user side, the anodized layer 11 is subjected to a blasting surface treatment so that the anodized layer 11 has a blasted surface 12 facing the user. Moreover, the anodized layer 11 and the metal part 11 are integrally disposed, so that the adhesion between the anodized layer 11 and the metal part 10 is enhanced, and the anodized layer 11 is prevented from falling off to affect the appearance performance of the housing 100. That is, the anodized layer 11 is formed by oxidizing the metal material of the metal part 10, and the metal part 10 is made of aluminum, silver, stainless steel, aluminum alloy, titanium alloy, magnesium-aluminum alloy, or the like. Specifically, the surface treatment of the anodized layer 11 by sandblasting may be performed after the ink protective layer 40 is attached to the coating layer 30. Of course, in other embodiments, the anodized layer 11 may be subjected to a sandblasting surface treatment before the ink protective layer 40 is attached to the coating layer 30.

Further, the non-metal part 20 is integrally provided with the metal part 10.

In the present embodiment, the non-metal part 20 and the metal part 10 are integrally formed by a nano injection process. First, the side surface 13 of the metal part 10 is nano-treated, and then the raw material of the non-metal part 20 is directly injection-molded on the side surface 13 of the metal part 10, so that the metal part 10 and the non-metal part 20 can be integrally molded. So that the non-metal part 20 and the metal part 10 can be effectively and stably combined.

Further, referring to fig. 9 and 10, the non-metal part 20 forms at least one micro-slit strip 50 of the housing 100, the micro-slit strip 50 is formed by a plurality of spaced micro-slits 51, and the metal part 10 includes at least two metal plates 14 and a plurality of metal strips 15 separated by the micro-slit strip 50.

In the present embodiment, the micro-slit tape 50 extends linearly in the width direction of the case 100. The case 100 is provided with one of the micro-slit tapes 50 so that the metal part 10 has two metal plates 14 and a plurality of the metal strips 15. Since the micro-slit tape 50 is formed of a plurality of micro-slits 51 spaced apart from each other, the non-metal part 20 and the coating layer 30 at the micro-slits 51, and the ink protection layer 40 are not easily observed to have a color difference with the metal part 10, thereby improving the appearance of the case 100. Specifically, the seam width L of the micro-seam 51 is 0.2 mm-3.0 mm. Since the non-metal part 20 forming the microstrip 50 has a large occupied space, the area of the antenna clearance area of the case 100 can be increased, thereby improving the electromagnetic radiation performance of the case 100. In other embodiments, the micro-slit tape 50 may also extend along the length direction of the housing 100, and two micro-slit tapes 50 may also be provided on the housing 100.

Further, referring to fig. 11, the housing 100 is composed of a back cover 60 and a frame 70 integrally disposed on the periphery of the back cover 60, wherein the frame 70 is formed on a curved edge of the periphery of the back cover 60.

In this embodiment, the housing 100 serves as a rear cover of the mobile terminal 200. The inside of the housing 100 is used to carry the battery, the main board and other functional components of the mobile terminal 200. Specifically, the back cover 60 is a rectangular plate, and the frame 70 is bent relative to the back cover 60. The frame 70 and the back cover 60 may be formed integrally by milling with a numerically controlled milling machine. And the non-metal part 20 partitions the metal part 10. In another embodiment, the frame 70 and the back cover 60 may be manufactured separately and assembled.

Further, referring to fig. 12, the present invention further provides a method for manufacturing a housing, which can manufacture the housing 100, and the method for manufacturing the housing includes the steps of:

s01: a housing piece 100a (see fig. 13) having a metal portion 10 (see fig. 13) and a non-metal portion 20 (see fig. 13) is provided.

In this embodiment, the metal part 10 and the non-metal part 20 are integrally formed by a nano-injection process to form the housing part 100 a. Specifically, a metal block 101 (see fig. 13) and a non-metal block 201 (see fig. 13) are provided, and the non-metal block 201 is molded on the metal block 101 by using a nano injection process, so that the metal block 101 and the non-metal block 201 form a plate 100b (see fig. 13). Then, milling is performed on the upper surface 100c (see fig. 13) and the lower surface 100d (see fig. 13) of the plate 100b, that is, numerical control milling is performed on the metal block 101 and the non-metal block 201 together, so that the metal block 101 and the non-metal block 201 form the metal portion 10 and the non-metal portion 20, respectively, and the housing part 100a has an appearance surface with precise dimensions. Finally, the metal part 10 and the non-metal part 20 are subjected to surface treatment so that the appearance surface of the shell body product 100 is flat and has good adhesion and fatigue resistance. In a preferred embodiment, the surface treatment of the metal part 10 and the non-metal part 20 may be performed by polishing and then performing a sand blasting. Of course, in other embodiments, only the metal part 10 and the non-metal part 20 may be subjected to the grinding and polishing process.

S02: a coating 30 (see fig. 3) is attached to the area of the appearance surface of the housing member 100a located on the non-metal part 20, and the color of the coating 30 is consistent with the color of the appearance surface of the metal part 10.

In the present embodiment, after the exterior surfaces of the metal part 10 and the non-metal part 20 are polished and sandblasted, the exterior surfaces of the metal part 10 and the non-metal part 20 have good adhesion, so that the exterior surfaces of the metal part 10 and the non-metal part 20 can be easily coated with ink. The coating layer 30 is formed by processing the ink. In order to protect the coating 30, a protective ink layer 40 is attached to the user-facing side of the coating 30. Specifically, referring to fig. 4, a layer of coloring ink 30a is sprayed on the outer surfaces of the metal part 10 and the non-metal part 20, and the coloring ink 30a is made of an ink mixed with metal particles and a coloring material. Baking the coloring ink 30a at 70 ℃ for 20 minutes to cure the coloring ink 30 a; then, referring to fig. 5, the protective ink 40a is sprayed on the baked colored ink 30a to cure the protective ink 40 a; then, referring to fig. 6, a film 40b is attached to the protective ink 40a, the film 40b has a predetermined light and shadow area 40c, the predetermined light and shadow area 40c coincides with the non-metal portion 20, and the film 40b is irradiated by a light source, so that the protective ink 40a and the coloring ink 30a are photopolymerized at a portion corresponding to the light and shadow area 40c, and the protective ink 40a and the coloring ink 30a are not photopolymerized at a portion corresponding to the metal portion 10; then, referring to fig. 7, the portions of the protective ink 40a and the coloring ink 30a where the photopolymerization reaction does not occur are corroded by a sodium carbonate solution, so that the protective ink 40a and the coloring ink 30a remain only on the non-metal part 20. Finally, the protection ink 40a and the coloring ink 30a remaining in the non-metal part 20 are baked and cured at 180 degrees celsius, so that the protection ink 40a and the coloring ink 30a remaining in the non-metal part 20 form the overcoat layer 30 and the ink protection layer 40, respectively.

S03: the side of the metal part 10 facing the user is surface treated so that an anodic oxidation layer 11 is formed on the side of the metal part 10 facing the user (see fig. 8).

In this embodiment, the metal part 10 is subjected to surface anodization on the side facing the user, so that an anodized layer 11 is formed on the side of the metal part 10 facing the user, and then the appearance surface of the metal part 10 facing the user is colored, so that the metal part 10 facing the user has a preset color. Of course, in another embodiment, if the metal part 10 is not subjected to the blasting process before the coating layer 30 is applied on the non-metal part 20, the anodized layer 11 needs to be subjected to the blasting process in order to further improve the appearance of the metal part 10, and it is required that the coating layer 30 and the ink protection layer 40 are applied using the anti-blasting ink when the coating layer 30 and the ink protection layer 40 are applied on the non-metal part 20.

Referring to fig. 14, the present invention further provides a mobile terminal 200, where the mobile terminal 200 includes the housing 100, the mobile terminal 200 further includes a main board 80 fixed in the housing 100, a functional component 81 disposed on the main board 80, and a front cover 90 covering the housing 100. It is understood that the functional component 81 may be an antenna, a battery, a central processing unit, or the like. The front cover 90 is composed of a light-transmitting cover plate 91 and a display screen 92 fixed to the light-transmitting cover plate 91. The periphery of the front cover 90 is fixedly connected with the rim 70 of the housing 100, so that the front cover 90 and the housing 100 together form an outer shell of the mobile terminal 200.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims

1. A shell applied to a mobile terminal, wherein the mobile terminal comprises a mainboard and an antenna arranged on the mainboard, the shell is fixed relative to the mainboard, the shell comprises two metal parts and a non-metal part fixedly connected between the two metal parts, the non-metal part forms at least one micro-slit belt of the shell, the micro-slit belt is opposite to the antenna, the micro-slit belt is composed of a plurality of spaced micro-slits, the slit width of the micro-slits is 0.2 mm-3.0 mm, the structure of the micro-slit belt provided with the plurality of micro-slits increases the ratio of the non-metal part, and the non-metal part is used for forming an antenna clearance area of the shell, so that the ratio of the antenna clearance area of the shell is increased; the metal part comprises at least two metal plates and a plurality of metal strips which are separated by the micro-slit strip; a coating is attached to one side, facing the user, of the non-metal part, and the color of the coating is consistent with that of the surface, facing the user, of the metal part; the coating layer is formed of an ink in which metal particles and a coloring material are mixed.

2. The housing according to claim 1, wherein the metal particles are any one metal or a combination of metal alloys of aluminum, or silver, or iron, or titanium.

3. A housing according to claim 1, characterized in that the coating is provided with a protective layer of ink on the side facing the user.

4. The housing of claim 3, wherein the ink protective layer is a sandblast resistant ink.

5. The housing of claim 3, wherein the ink and the ink protective layer are both exposed ink.

6. The housing of claim 3, wherein the ink protective layer has a matte finish facing a user.

7. The housing according to claim 3, wherein the non-metallic portion is laminated with a plurality of layers of the coating or/and a plurality of layers of the ink protection layer.

8. The casing according to any one of claims 1 to 7, wherein the non-metal part is made of a non-signal shielding material.

9. The casing according to any one of claims 1 to 7, wherein the non-metallic portion is made of plastic, carbon fiber, organic resin, or glass fiber.

10. The casing according to any one of claims 1 to 7, wherein the metal part is provided with an anodized layer on a side facing the user, and the color of the anodized layer is identical to that of the coating.

11. The housing of claim 10, wherein the anodized layer has a grit blast surface facing a user.

12. The housing of claim 10, wherein the anodized layer is integral with the metal portion.

13. The casing of claim 10, wherein the metal part is made of aluminum, silver, stainless steel, aluminum alloy, titanium alloy, magnesium-aluminum alloy, or the like.

14. The housing of claim 1, wherein the non-metallic portion is integrally disposed with the metallic portion.

15. The housing of claim 1, wherein the housing is composed of a back cover and a rim integrally formed at a periphery of the back cover, the rim being formed at a curved edge of the periphery of the back cover.

16. A shell manufacturing method is used for manufacturing a shell, the shell is applied to a mobile terminal, the mobile terminal comprises a mainboard and an antenna arranged on the mainboard, and the shell is fixed relative to the mainboard, and the shell manufacturing method comprises the following steps:

providing a housing part with a metal part and a non-metal part, wherein the non-metal part forms at least one micro-slit belt of the housing, the micro-slit belt is opposite to the antenna, the micro-slit belt is composed of a plurality of spaced micro-slits, the slit width of the micro-slits is 0.2 mm-3.0 mm, the micro-slit belt is provided with a plurality of micro-slits, the non-metal part is used for forming an antenna clearance area of the housing, so that the antenna clearance area of the housing is increased, and the metal part comprises at least two metal plates and a plurality of metal strips separated by the micro-slit belt;

17. The method of claim 16, wherein the metal portion and the non-metal portion are integrally formed by a nano-injection process.

18. The method for manufacturing the shell according to claim 16, wherein the outer surface of the shell is formed by milling and then subjected to surface treatment to flatten the outer surface of the shell.

19. The method of manufacturing a housing according to claim 16, wherein the coating layer is formed of an ink in which metal particles and a coloring material are mixed.

20. A method of manufacturing a casing according to claim 19 wherein a protective layer of ink is applied to the user facing side of the coating.

21. The method of manufacturing a housing according to claim 20, wherein a coloring ink and a protective ink are sequentially applied to the exterior surface of the housing member, and the coloring ink and the protective ink in the metal portion region are etched by an exposure and development process, so that the coloring ink and the protective ink remaining in the non-metal portion region form the coating layer and the ink protective layer, respectively.

22. The method of claim 21, wherein the protective ink is applied to the pigmented ink after the pigmented ink is baked at a predetermined temperature for a predetermined length of time.

23. The method of manufacturing a housing according to claim 22, wherein the coating layer and the ink protective layer are formed by baking and curing the coloring ink and the protective ink remaining in the non-metal portion region, respectively.

24. The method of making a housing of claim 16, further comprising:

and carrying out surface treatment on the side of the metal part facing the user so that an anodic oxidation layer is formed on the side of the metal part facing the user.

25. The method of claim 24, wherein the anodized layer is grit blasted.

26. A mobile terminal, characterized in that the mobile terminal comprises the housing according to any one of claims 1 to 15, and the mobile terminal further comprises a main board fixed in the housing and a functional component arranged on the main board.